Omitting the ec2 files

Added a README and cleaned up code

Added more comments.

Code cleanup and refactoring

Fixed bug where the first side to send EOF would not destroy the connection.

Code cleanup. adding comments.

Fixed bug in client: forgot to increment seqnoLastPacketSent after sending a data packet. Now passing all tests.

Oh shit, I should have unit tested, a million bugs probably by now

Added functionality to send acks for data packets previously seen.

cleaned up a bunch of syntax bugs catched by the compiler.

Added some state for server side in rel_t. Implemented rel_destroy to free rel_t memory. Expanded process_ack so that client can call rel_destroy after receiving ack for EOF packet only if the server is also in finished state.

Removing conceptual confusion about transmitter and client from code. Renaming transmitter comments and variables to client. No functionality change, just documentation change.

Implemented rel_timer. Done with transmitter side

Implemented transmitter side of rel_recvpkt. Only missing rel_timer on the transmitter side.

Implemented rel_read and added 3 fields to rel_t.